Los puntos clave no están disponibles para este artículo en este momento.
Liang-Chih Yu, Jin Wang, K. Robert Lai, Xue-jie Zhang. Proceedings of the 53rd Annual Meeting of the Association for Computational Linguistics and the 7th International Joint Conference on Natural Language Processing (Volume 2: Short Papers). 2015.
Yu et al. (Thu,) studied this question.